-10
Because your calculator is broken. Seriously; 30 divided by half (0.5) is 60 and 60 + 10 = 70 So, 30 cut in half (30/2) is 15 but 30 DIVIDED BY half (30/0.5) is 60.
10
40
Seven and one-half divided by three fourths = 10.
-10
Twenty divided in half is 20/2 = 10 Twenty divided by half is 20/(1/2) = 40
3.3333
1/10
Because your calculator is broken. Seriously; 30 divided by half (0.5) is 60 and 60 + 10 = 70 So, 30 cut in half (30/2) is 15 but 30 DIVIDED BY half (30/0.5) is 60.
40
10
13
40
10
1/2 divided by 5 = 1/10
40